Adjustable dolly



May 28, 1935.

D. L. U'LMER ADJUSTABLE DQLLY Filed April 28, 1933 2 Sheets-Sheet 1 I ig- A I [o@ o o o 6 o o o o 0 o 0 INVENTOR ATTORNEY Z BY ADJUSTABLE DOLLY Filed April 28, 1933 2 Sheet s-Sheet 2 iz'g 4 M 5 I I m! a a INVENTOR in-W BY ATTORNEY Patented May 28, 1935 UNITED STATES PATENT OFFICE 2 Claims.

My invention relates to extensible wheeled supports for holding and moving structures having supporting legs thereon, of difierent sizes and different formations and means for adaptation to said varied sizes and has for its object to provide a support which will permit of the moving of the structure about the floor or supporting surface from one place to another and while in use, or for storage when not in use, and also to produce a movable and dirigible and adjustable frame support, easily changed in formation, narrowed or expanded for supporting a structure and permitting the structure to be removed when required from the support.

With these objects in view my invention consists of the following novel features of construction and arrangement of parts as will be hereinafter more fully described and pointed out in the claims, reference being had to the accompanying drawings in which:

Fig. l is a combined top plan view of my device, contracted and in expanded formation.

Fig. 2 is a side view of the device shown in Fig. 1.

Fig. 3 is a plan view of a modified form of my device provided with rectangular connecting rods.

Fig. i is a side view of the device shown in Fig. 3.

Fig. 5 is a side elevation of a part of my device.

Fig. 6 is an end elevation in cross section of a part of my device.

Fig. '7 is a side view partly in cross section of a fragmentary part of my device.

Fig. 8 is a side view partly in cross section of a part of my device.

The same reference characters denote like parts in each of the several figures of the drawings.

In carrying out my invention shown in Fig. 1 I provide a series of circular cups A, A, hollow in form and having projecting from one side of each cup a lug formation 13, which projects in a tubular outline 2, the tube projecting from one cup formation being larger diametrically than the tube formation projecting from the opposite cup 2", formation and designed to telescope one with the other. The lug B has projecting from it the tube formation B which telescopes within the opposite projecting tube formation B and so operates in slidable union therewith. The opposite tube formation B slidably entering B and so from the projecting lugs B of each cup extends the tubular formation B opposite each other and one telescoping within the opposite member.

As a further part of my device I have in the outer end of the enlarged tube formation B a slot 22, on each opposite side of the enlarged formation B as shown in Fig. 6.

As a further part of my device I have slidably 5 mounted on the outer surface of the tubular formation surface B the ring formation 3, shown in Fig. 6, having vertically mounted therein the sliding key 4, shown in Fig.6, which is pivotally positioned upon the vertical standard 5, in said 10 ring 3. The standard 5 having outer thread formations 6 and having at the head thereof the sliding turn handle 7, the inner key 4 vertically moving upward and downward in the ring formation 3, and by the turning of the screw handle 5 I the tubular slotted formation 22 in B is drawn up and a pressure formed upon the inner tubular member B and so the projecting formations in slidable position can be fixed and stationed at any given point as shown in Fig. l and Fig. 2.

As a modified form of my device I have mounted upon the cup formations A the lug projections B and B each projection having projected therefrom a perforated flat bar 8, as shown in Figs. 3 and 4. The one flat surface projection 8 slid- 25 ably contacting with the adjoming oppositely positioned formation 8 drawn together and held or drawn apart and held by the bolt nut 9 which may be inserted between the parts at any one of the many openings I0, and I0; the projecting flat members 8 and 8 shown in Figs. 3 and 4 project from and are integral with the turn head II which is pivotally mounted to the projected lug B, of cup A, as shown in Fig. 4, and held in pivotal position by the pivots I2 and I2, shown in Fig. 4, mounted therein and thus in this manner the projecting lugs from the cups A, A, are adapted to turn horizontally and form into varied angular positions. Through the pivoting union of the arms and lugs from the cups A, A, said arms and lugs are adapted to turn horizontally and form into varied angular positions. Through the pivoting union of the arms and lugs from the cups A and A, extends the pivot I2 and I2, as'shown in Fig. 4.

Having thus described my invention, what I claim as new, and for which I desire Letters Patent is as follows:

1. In a device of the class described, a plurality of cup-shaped members each having a castor mounted thereon, lugs projecting at right angles from the sides of the cup-shaped members, perforated bars pivotally mounted on the lugs by vertical pivots, the bars of opposing lugsadapted to be moved in contiguous relationship with each other, registering perforations 1n the bars, and locking means insertable in the perforations for securing the parts together.

2. In a device of the class described, a plurality of cup-shaped members each having a castor mounted thereon, lugs projecting at right angles from the sides of the cup-shaped members, perforated bars pivotally mounted on the lugs by vertical pivots to permit said bars to swing horizontally relative to the cup-shaped members, the bars of opposing lugs adapted to be moved in contiguous relationship with each other and having registering perforations and locking means insertable in the perforations for securing the parts together.

DONALD L. ULMER. 

